The Secret of Grisly Manor - adventure quest with elements of puzzle games with a fascinating story. According to the story the main character is at the home of his grandfather after a huge number of years since his last visit. Grandpa was a talented inventor, and the mansion is full of things that he created. Everything is wrapped in mystery, so the user must help the protagonist to understand all the mysteries that hides the house. This will solve a lot of logical problems and a few secret rooms and locations.